Britain has called for the immediate release of the Libyan prime minister after he was seized by armed men.
Foreign Secretary William Hague tweeted:
I condemn the abduction of Libya's Prime Minister and call for his immediate release. Gov and people of #Libya have our full support
A statement added:
"Our ambassador is in touch with other members of the interim government. It is vital that the process of political transition in Libya is maintained. The government and people of Libya have our full support at this concerning time."
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The men were detained as part of an investigation by MI5 and the Metropolitan Police's Counter Terrorism Command.